*HEADING
 Transfer from Standard to Explicit:  Test for B21 element
 - Explicit analysis
 - Unloading of the tension 
*IMPORT,UPDATE=NO,STATE=NO
 RECT, BOX, CIRC, HEX, I, L, PIPE, TRAP
*IMPORT NSET
 ALL, LEFT, RIGHT 
*BOUNDARY
 LEFT, 1,2
 LEFT, 6,6
 RIGHT, 2,2
 RIGHT, 6,6
**
**
*NSET, NSET=QA_TEST_ALLNODES
 ALL, LEFT, RIGHT
**
*STEP
*DYNAMIC,EXPLICIT
 , 0.1
*FILE OUTPUT,TIMEMARKS=YES,NUM=4
*NODE FILE
 U,
 COORD,
*OUTPUT, FIELD, TIMEMARKS=YES, NUMBER INTERVAL=4
*NODE OUTPUT, NSET=QA_TEST_ALLNODES
 U,
 COORD,
*OUTPUT,FIELD,VARIABLE=PRESELECT
*OUTPUT,HISTORY,VARIABLE=PRESELECT,TIMEINT=0.025
*END STEP